Sarkinite
A variety of Minerals
What is Sarkinite?
Sarkinite is red to yellow in color. It occurs as thick tabular crystals, short prismatic crystals, or has a granular habit. Sarkinite sometimes aggregates into a roughly spherical shape. Sarkinite is a member of the Wagnerite Group. The mineral occurs in manganese-rich lenses in quartzitic chlorite schists, metamorphosed zinc ore bodies, and rarely in metamorphosed Fe–Mn ore bodies.
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Key Characteristics
Composition of Sarkinite
Sarkinite is isostructural with triploidite and wolfeite and is a dimorph of eveite. The crystal structure consists of MnO4(OH)2 octahedra, MnO4(OH) trigonal bipyramids, and AsO4 tetrahedra.
Quick Facts
Physical Properties
- Color
- Red, rose-red, reddish-yellow, yellow, pinkish; light rose or yellow in transmitted light.
- Hardness (Mohs)
- 4 - 5
- Density
- 4.04 g/cm³
- Streak
- Red to yellow
Chemical Properties
- Chemical Formula
- Mn2+2(AsO4)(OH)
- Elements
- As, H, Mn, O
Also Known As
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